<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <ul>
            <li v-for="(item,index) in list">{{item.num}}<button @click="del(item.id)">删除</button></li>
        </ul>
        <button @click="fn">生成按钮</button>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.7.16/dist/vue.js"></script>
    <script>
        const app = new Vue({
            el:'#app',
            data:{
                list:[
                    {id:1,num:3},
                    {id:2,num:9},
                    {id:3,num:10}
                ]
            },
            methods:{
                del(id){
                    this.list = this.list.filter(item => item.id != id)
                    console.log(this.list)
                },
                fn(){
                    this.list.push({
                        id: +new Date(),
                        num: Math.floor(Math.random()*20)
                    })
                    
                }

            }
            
        })
    </script>
</body>
</html>